Alternative Gantry Lighting Technology


Background

During a project to replace overhead sign gantry lighting we decided to look at alternative lighting solutions.

Solution

As part of the project we started to look at the possibility of lengthening the life span of current lighting arrangements while meeting stringent specifications for motorway gantry signage. Working with manufacturer Urbis/Schreder we identified a product originally developed for architectural ornamental lighting on monuments and building facades.

The product LED SCULPline offered longer life span and robust materials (aluminium, glass, polycarbonate). The IP66 ingress protection rating means that the photometric and mechanical properties are sustained over time, reducing the need for future maintenance, saving time and cost.

This sector first innovation offers a range of advantages;

  • Flexibility for adaptability to design for a specific project
  • Unique flexibility in photometric performance, enhancing customer experience
  • Adaptable beam photometry allowing a range of desired beam distribution
  • Final effect can be tweaked when in place
  • Refractors are fitted over the product and without front screws so not impacting on the product rating
  • Ultra-even white colour which softens the hard edging

New led lighting on signage at Junction 4 M180 07.07.16 New led lighting on signage at Junction 4 M180 07.07.16

Longer life span, lower system power, minimal lumen depreciation (maintaining its initial level of LED output) equating to a significant reduction in maintenance requirements providing cost and safety benefits.

  • Instant switching and dimming
  • Sustainable product lifecycle with reduced carbon footprint

The main challenge was seeking timely agreement to transfer the product use from the building sector and ensuring that it meets the stringent Specification for Highways Works and the Design Manual for Roads and Bridges. By engaging early in the concept with technical experts at Highways England, any risk to timely project delivery was mitigated.

The system we have developed can be transferred and used as a standard arrangement for any future schemes with the only variable being number and type of fittings required.

This solution is an alternative to the more recent use of retro-reflective prismatic sign material which is reliant upon headlights hitting signage. External factors such as weather, dirt, poor quality headlights all have an impact on the customer experience.

This new system provides improved and consistent lighting for customers at night with linear fittings overcoming the uniformity of lighting on sign faces.

In addition energy consumption has fallen by over 65%.